These are the only supermarket shopping bags youll need. Designed to fit shallow or deep trolleys, they have a clever design, unfolding to twice their height when needed. Attractively coloured, they have a generous base, and being made from PVC coated polyester, theyre strong enough to hold their shape when loading and unloading. And when all the shopping has been unloaded, they fold down to store away until next time. - mysmartbuy Foldable 2-in-1 Trolley Tote Bags - Reusable & Expandable Strong Durable PVC Coated Shopping Bag Set